Peter,
If you need a vertical vectorial fill to display on elevations, this is what I have done. Go to Options/Fill Types and choose a horiz. fill that is close to what you need. Click New, give it a name, and change to 90 degrees. Use this with whatever material you choose.
Steve
AC19(9001), 27" iMac i7, 12 gb ram, ATI Radeon HD 4850 512mb, OS 10.12.6